Heliostat support

Abstract

The utility model discloses a heliostat support, which relates to the technical field of solar photo-thermal application and comprises a mounting base column, a vertical column, a support component, a horizontal driving device and a vertical driving device. One end of the stand column is rotationally connected with the mounting base column, one side of the supporting assembly is hinged to the other end of the stand column, and the supporting assembly is used for supporting the heliostat; the horizontal driving device comprises a first piston cylinder and a transmission mechanism, and the vertical driving device comprises a second piston cylinder; the first piston cylinder is arranged on the mounting base column, the transmission mechanism is arranged between the first piston cylinder and the stand column, and the transmission mechanism is used for converting linear motion of the first piston cylinder into circumferential rotation of the stand column; one end of the second piston cylinder is hinged to the stand column, and the other end of the second piston cylinder is hinged to the supporting assembly. The hinged position of the supporting assembly and the second piston cylinder and the hinged position of the supporting assembly and the stand column are located on the two opposite sides respectively. The heliostat support is strong in driving force, and cost can be saved through batch use.

Description

Technical Field

[0001] The utility model relates to the technical field of solar thermal application, in particular to a heliostat bracket. Background Art

[0002] In daily use, heliostats need to track the sun by adjusting the bracket at two angles, horizontally and vertically. To achieve this function, the bracket is usually equipped with an electric drive device that can adjust the angle in two directions. These electric drives can be worm gear drives or electric push rod drives. In daily use, it is found that such electric drives have insufficient driving force in some cases, and the use of such electric drives in batches in a heliostat field faces the problem of high cost. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art to a certain extent. To this end, the utility model provides a heliostat bracket, which can save costs.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A heliostat support, comprising a mounting base column, a column, a support assembly, a horizontal drive device and a vertical drive device; one end of the column is rotatably connected to the mounting base column, the support assembly is hinged to the other end of the column, and the support assembly is used to support the heliostat; the horizontal drive device comprises a first piston cylinder and a transmission mechanism, and the vertical drive device comprises a second piston cylinder;

[0006] The first piston cylinder is arranged on the mounting base column, the transmission mechanism is arranged between the first piston cylinder and the column, and the transmission mechanism is used to convert the linear motion of the first piston cylinder into the circumferential rotation of the column;

[0007] One end of the second piston cylinder is hinged to the column, and the other end of the second piston cylinder is hinged to the support assembly; the hinge between the support assembly and the second piston cylinder and the hinge between the support assembly and the column are located on opposite sides respectively.

[0008] Optionally, the transmission mechanism includes a gear arranged on the column, and a rack meshing with the gear; the axial direction of the gear is in the same direction as the rotation center of the column; one end of the first piston cylinder is connected to the mounting base column, and one end of the rack is connected to the other end of the first piston cylinder.

[0009] Optionally, the gear is coaxially driven with the column; the gear teeth of the gear face radially outward; the rack is located on the outside of the gear, and the side of the rack having the tooth surface faces the gear.

[0010] Optionally, a limiting member is provided on the mounting base column, and a gap is provided between the limiting member and the gear teeth for the rack to pass through; the limiting member contacts a side surface opposite to the tooth surface of the rack.

[0011] Optionally, the gear is a crown gear, the crown teeth of the crown gear are located on one side of the crown gear in the axial direction; the rack is located on one side of the crown gear in the axial direction, and the side of the rack having the tooth surface is opposite to the crown teeth of the crown gear.

[0012] Optionally, the length of the rack is greater than the circumference of the gear.

[0013] Optionally, the support assembly includes a main shaft and a connecting rod;

[0014] The support assembly is hinged to the other end of the column with the main shaft as the center; the middle of the main shaft intersects with the column;

[0015] One end of the connecting rod is connected to the outer wall of the main shaft and the other end of the connecting rod extends along the radial direction of the main shaft; the other end of the connecting rod is hinged to the upper end of the second piston cylinder.

[0016] Optionally, a hydraulic station is also included; the hydraulic station is connected to the first piston cylinder and the second piston cylinder pipelines respectively.

[0017] Optionally, a bearing is provided between the column and the main shaft;

[0018] The bearing comprises an inner ring and an outer ring which are rotatable relative to each other; the inner ring is sleeved on the main shaft, the outer ring is connected to the upper end of the column, and the column is arranged in the radial direction of the outer ring.

[0019] Optionally, a hydraulic station is also included; the hydraulic station is connected to the first piston cylinder and the second piston cylinder pipelines respectively.

[0020] Optionally, the support assembly further comprises a plurality of cross beams arranged on the main shaft, wherein the plurality of cross beams intersect with the main shaft to form a mounting surface for fixing the heliostat; and a distance from the main shaft to the rack is greater than a distance from an edge of the cross beam to the main shaft.

[0021] The heliostat bracket provided by the utility model has the following effects:

[0022] 1. The horizontal drive device adopts the first piston cylinder, and cooperates with gears and racks, replacing the expensive worm gear, which can reduce costs and has a large driving force;

[0023] 2. The vertical drive device adopts a second piston cylinder, which can replace the worm gear to reduce costs. On the other hand, the hydraulic push rod has a large thrust. Even if the angle between the force arm and the push rod is small and the effective force arm is very short, it can still drive normally.

[0024] 3. The vertical drive device and the first hydraulic push rod are both hydraulic drive devices and can share the same hydraulic station. Compared with drive devices with different structures, this solution can reduce costs and facilitate maintenance.

[0025] These features and advantages of the utility model will be disclosed in detail in the following specific embodiments and drawings. The best implementation or means of the utility model will be fully presented in conjunction with the drawings, but it is not a limitation of the technical solution of the utility model. In addition, these features, elements and components appearing in each of the following texts and drawings are multiple, and are marked with different symbols or numbers for convenience, but all represent components with the same or similar structure or function. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The utility model is further described below in conjunction with the accompanying drawings:

[0027] Figure 1 FIG. 4 is a schematic structural diagram of a heliostat support and a heliostat according to an embodiment.

[0028] Figure 2 Schematic diagram of the structure of a heliostat support in one embodiment.

[0029] Figure 3 FIG. 1 is a cross-sectional view of a heliostat support at a gear along a radial direction in an embodiment, showing a state in which the gear is meshed with a rack.

[0030] Figure 4 FIG. 1 is a cross-sectional view of the heliostat support along the axial direction of the column in one embodiment, showing a state in which the crown gear is meshed with the rack.

[0031] Among them, 100, mounting base column; 110, limit piece; 200, column; 210, bearing; 220, connecting rod; 300, supporting assembly; 310, main shaft; 320, crossbeam; 330, connecting rod; 410, first piston cylinder; 421, gear; 422, rack; 510, second piston cylinder; 600, hydraulic station; 700, heliostat. DETAILED DESCRIPTION

[0032] The following is a detailed description of embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments in the implementation manner are intended to be used to explain the present invention and should not be construed as limiting the present invention.

[0033] References to "one embodiment" or "an example" or "an example" in this specification mean that a particular feature, structure, or characteristic described in conjunction with the embodiment itself may be included in at least one embodiment disclosed in the present utility model. The appearance of the phrase "in one embodiment" in various places in the specification does not necessarily refer to the same embodiment.

[0034] In the existing heliostats using electric drive devices, the horizontal angle adjustment is generally driven by a motor and a worm gear. Although the worm gear has a self-locking function and can keep the position unchanged without power supply, which is very important in the use of heliostats, the use of a motor and a worm gear to adjust the heliostat in the horizontal direction will result in high costs, especially when a large number of heliostats are used in a mirror field.

[0035] The vertical angle adjustment of the heliostat is driven by a motor-driven worm gear or directly by an electric push rod. Since the electric push rod is a linear motion, it is a linear drive. Although its cost is lower than that of the worm gear, it is necessary to add a lever arm to convert the linear motion into rotational motion. When the angle between the lever arm and the electric push rod is relatively small (for example, when they are close to parallel), the effective lever arm is very short, which will cause the actual efficiency of the electric push rod to be extremely low. Therefore, if an electric push rod is used, a large-tonnage electric push rod must be configured to meet the demand, which will undoubtedly increase the cost.

[0036] At the same time, when two different driving mechanisms are used to adjust the horizontal angle and vertical angle of the heliostat bracket, different maintenance requirements are required, which will also increase the operation and maintenance workload.

[0037] Example:

[0038] like Figure 1 and Figure 2 As shown, a heliostat support, the heliostat support 700 includes a mounting base column 100, a column 200, a support assembly 300, a horizontal drive device and a vertical drive device.

[0039] The lower end of the mounting base column 100 is used to be inserted into the ground or fixed to the mounting foundation buried in the ground, and the upper end of the mounting base column is used to fix the column 200 and the horizontal drive device. The mounting foundation is usually a column or a stand erected on the ground, and is mostly a hollow structure.

[0040] The upper end of the mounting base column 100 has a support surface, which is horizontally arranged. The column 200 is erected on the support surface of the mounting base column 100. The column 200 can be a cylinder or a square column, and the shape is not limited. The column 200 can rotate on the support surface with its own axis as the center of rotation. Specifically, a vertical axis can be erected on the support surface. The lower end of the column 200 is hollow and has an opening so that the vertical axis can be inserted through the opening. A rolling bearing is used to connect the vertical axis and the column 200 to realize the rotation of the column 200; or a circular hole is provided on the support surface, and the lower end of the column 200 is inserted into the circular hole and connected to the circular hole through a rolling bearing, so that the column 200 can realize rotation. The above two methods are all acceptable and are not limited here.

[0041] The support assembly is hinged to the other end of the column, and the support assembly is hinged to the vertical drive device on the side away from the hinge with the column. The support assembly includes a main shaft 310. The main shaft 310 is horizontally arranged, and the main shaft 310 is used to install the heliostat 700. The center position of the main shaft 310 is connected to the upper end of the column 200. Specifically, a bearing 210 is provided between the upper end of the column 200 and the middle of the main shaft 310. The bearing 210 includes an inner ring and an outer ring that can rotate relative to each other. The diameter of the inner ring is smaller than the diameter of the outer ring, and the inner ring is located at the center of the outer ring. The inner ring and the outer ring realize relative rotation through a plurality of rollers distributed circumferentially therebetween.

[0042] The inner ring is sleeved outside the middle position of the main shaft 310, the outer wall of the outer ring is fixedly connected to the upper end of the column 200, and the column 200 is arranged in the radial direction of the outer ring, that is, the axial direction of the bearing 210 is horizontally arranged.

[0043] The vertical driving device is disposed on the column 200 and connected to the main shaft 310. The vertical driving device is used to drive the main shaft 310 and make it rotate along the circumference of the main shaft 310, thereby driving the heliostat 700 fixed on the main shaft 310.

[0044] The horizontal driving device is arranged on the supporting surface of the mounting base column 100 and is located on one side of the column 200. The horizontal driving device is used to drive the main shaft 310 to rotate around the column 200.

[0045] In this embodiment, the horizontal drive device includes a first piston cylinder 410. The first piston cylinder 410 is fixed on the mounting base column 100. A transmission mechanism is provided between the first piston cylinder 410 and the column 200. Through the transmission mechanism, the linear motion of the first piston cylinder is converted into the circumferential rotation of the column, that is, the column 200 rotates, thereby realizing the rotation of the driving spindle 310 around the column 200.

[0046] Specifically, Figure 3As shown, the transmission mechanism includes a gear 421 disposed on the column 200, and a rack 422 meshing with the gear 421. The axial direction of the gear 421 is in the same direction as the rotation center of the column 200, and the gear 421 is located on the support surface, that is, the gear 421 is exposed on the support surface. The rack 422 is also horizontally disposed on the support surface and can move along its length direction. Therefore, the rack 422 can mesh with the gear 421 on the support surface. One end of the rack 422 is connected to the other end of the first piston cylinder, and the output end of the hydraulic cylinder drives the rack 422 to move on the support surface of the mounting base column 100, thereby driving the gear 421 and the column 200, and then the main shaft 310 is rotated around the column 200, that is, the angle adjustment of the heliostat 700 on the main shaft 310 in the horizontal direction is realized.

[0047] In this embodiment, the horizontal driving device uses the first piston cylinder 410 and cooperates with the transmission of the gear 421 and the rack 422 to achieve the angle adjustment of the heliostat 700 in the horizontal direction, replacing the expensive worm gear and reducing the cost.

[0048] like Figure 3 As shown, in one embodiment, the gear 421 and the column 200 are coaxially driven, that is, the gear 421 adopts an outer gear ring structure, the column 200 passes through the middle of the gear 421, and the rotation center of the gear 421 is colinear with the rotation center of the column 200 and the vertical axis. The gear 421 adopts an outer gear ring structure, and its gear teeth face outward in the radial direction. The rack 422 adopts a spur rack 422, which is located on the outside of the gear 421, and the side of the rack 422 with the tooth surface faces the gear 421.

[0049] In order to allow the rack 422 to move only along the length direction of the rack 422 on the support surface, a stopper 110 is provided on the mounting base column 100. A gap is provided between the stopper 110 and the gear teeth of the gear 421 for the rack 422 to pass through, and the rack 422 passes through the gap. The tooth surface of the rack 422 meshes with the gear 421, and the stopper 110 contacts the side surface opposite to the tooth surface of the rack 422. When the first piston cylinder 410 drives the rack 422 to move, the stopper 110 can limit the distance between the rack 422 and the gear 421, so that in the radial direction of the gear 421, the rack 422 is always in meshing state with the gear 421.

[0050] On the support surface, the specific implementation of the limiter 110 can be achieved by setting a limit groove on the mounting base column 100, setting the rack 422 in the limit groove, so that the back side of the rack 422 (the back side is the side opposite to the tooth surface) is slidably connected with the groove wall of the limit groove. Rollers can also be set on the support surface to achieve this. Figure 3As shown, two rollers are arranged on the mounting base column 100, and the rollers are located on the back of the rack 422, so that when the rack 422 is driven by the first piston cylinder 410, the back of the rack 422 can contact the rollers with rolling friction. Compared with the method of using a limiting groove, the use of rollers in the limiting member 110 can reduce the friction resistance when the rack 422 moves. Similarly, multiple rollers can be arranged on the supporting surface below the rack 422, so that the lower surface of the rack 422 moves on multiple rollers, which can also reduce friction resistance.

[0051] In addition to the above solution, the gear 421 of the transmission mechanism can also adopt a crown gear 421 (see Figure 4 ), the crown teeth of the crown gear 421 are located on one side of the crown gear 421 in the axial direction. The rack 422 is located on one side of the crown gear 421 in the axial direction, and the side of the rack 422 having the tooth surface is opposite to the crown teeth of the crown gear 421.

[0052] exist Figure 4 In the illustrated embodiment, the crown gear 421 and the column 200 are coaxially driven, and the crown gear 421 is preferably arranged with the crown teeth facing downward and facing the support surface of the mounting base column 100. Correspondingly, the rack 422 is placed flat on the support surface and the tooth surface of the rack 422 faces upward and meshes with the crown teeth. The first piston cylinder 410 can drive the rack 422 to slide on the support surface, thereby driving the crown gear 421 and the column 200, and then allowing the main shaft 310 to rotate around the column 200, that is, the angle adjustment of the heliostat 700 on the main shaft 310 in the horizontal direction is achieved.

[0053] Preferably, the length of the rack 422 is greater than the circumference of the gear 421, and the stroke of the output end of the first piston cylinder 410 is also greater than the circumference of the gear 421. In this way, the adjustment angle of the heliostat 700 on the main shaft 310 in the horizontal direction can reach 360°, so that there is no dead angle adjustment.

[0054] In order to further reduce costs and solve the problem of very short effective force arm and insufficient driving force caused by the small angle between the force arm and the push rod during the vertical adjustment process, the vertical drive device in this embodiment, like the horizontal drive device, also uses a hydraulic cylinder, such as a piston cylinder and a plunger cylinder, to achieve reciprocating linear motion.

[0055] Specifically, the vertical drive device is a second piston cylinder 510 arranged in the vertical direction, and the lower end of the second piston cylinder 510 is hinged to the column 200. In this embodiment, the support assembly also includes a connecting rod 330 arranged on the main shaft 310 and extending in the radial direction of the main shaft 310, one end of the connecting rod 330 is connected to the main shaft 310, and the other end of the connecting rod 330 is hinged to the upper end of the second piston cylinder 510. The second piston cylinder 510, the connecting rod 330 and the part of the column 200 located between the connecting rod 330 and the second piston cylinder 510 constitute a triangular support structure. When the second piston cylinder 510 is in motion, the output end of the second piston cylinder 510 extends, which will make its length longer, so that the connecting rod 330 deflects a corresponding angle with the main shaft 310 as the center, thereby realizing the angle adjustment of the heliostat 700 in the vertical direction.

[0056] The second piston cylinder 510 includes a cylinder body and a plunger that moves in the cylinder body, and the free end of the plunger is the output end of the second piston cylinder 510. The cylinder body can be hinged to the column 200, and the free end of the plunger is hinged to the connecting rod 330. (Or the cylinder body is hinged to the connecting rod 330, and the free end of the plunger is hinged to the column 200).

[0057] Preferably, the heliostat 700 support further includes a hydraulic station 600. The hydraulic station 600 has two oil outlets and two oil return ports, the two oil outlets of the hydraulic station 600 are respectively connected to the oil inlet pipelines of the first piston cylinder 410 and the second piston cylinder 510, and the two oil return ports of the hydraulic station 600 are respectively connected to the oil outlet pipelines of the first piston cylinder 410 and the second piston cylinder 510.

[0058] like Figure 2 As shown, the support assembly also includes a plurality of beams 320 disposed on the main shaft 310 . The plurality of beams 320 are arranged in parallel and at intervals on the main shaft 310 . The plurality of beams 320 intersect with the main shaft 310 to form a mounting surface for fixing the heliostat 700 .

[0059] In this embodiment, the distance between the main shaft 310 and the rack 422 is greater than the distance between the edge of the crossbeam 320 and the main shaft 310. With this arrangement, the crossbeam 320 and the heliostat 700 will not touch the rack 422 when the heliostat 700 is adjusted in the vertical direction.

[0060] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention shall be included in the scope of the claims.

Claims

1. A heliostat support, comprising a mounting base column, a column, a support assembly, a horizontal drive device and a vertical drive device; one end of the column is rotatably connected to the mounting base column, the support assembly is hinged to the other end of the column, and the support assembly is used to support the heliostat; characterized in that: The horizontal drive device comprises a first piston cylinder and a transmission mechanism, and the vertical drive device comprises a second piston cylinder; The first piston cylinder is arranged on the mounting base column, the transmission mechanism is arranged between the first piston cylinder and the column, and the transmission mechanism is used to convert the linear motion of the first piston cylinder into the circumferential rotation of the column; One end of the second piston cylinder is hinged to the column, and the other end of the second piston cylinder is hinged to the support assembly; the hinge between the support assembly and the second piston cylinder and the hinge between the support assembly and the column are located on opposite sides respectively.

2. The heliostat support according to claim 1, characterized in that: The transmission mechanism includes a gear arranged on the column and a rack meshing with the gear; the axial direction of the gear is in the same direction as the rotation center of the column; one end of the first piston cylinder is connected to the mounting base column, and one end of the rack is connected to the other end of the first piston cylinder.

3. The heliostat support according to claim 2, characterized in that: The gear is coaxially driven with the column; the gear teeth of the gear face radially outward; the rack is located on the outside of the gear, and the side of the rack with the tooth surface faces the gear.

4. The heliostat support according to claim 3, characterized in that: A limiting member is provided on the mounting base column, and a gap is provided between the limiting member and the gear teeth for the rack to pass through; the limiting member contacts a side surface opposite to the tooth surface of the rack.

5. The heliostat support according to claim 2, characterized in that: The gear is a crown gear, the crown teeth of the crown gear are located on one side of the crown gear in the axial direction; the rack is located on one side of the crown gear in the axial direction, and the side of the rack having the tooth surface is opposite to the crown teeth of the crown gear.

6. The heliostat support according to claim 2, characterized in that: The length of the rack is greater than the circumference of the gear.

7. The heliostat support according to any one of claims 2 to 6, characterized in that: The support assembly includes a main shaft and a connecting rod; The support assembly is hinged to the other end of the column with the main shaft as the center; the middle of the main shaft intersects with the column; One end of the connecting rod is connected to the outer wall of the main shaft and the other end of the connecting rod extends along the radial direction of the main shaft; the other end of the connecting rod is hinged to the upper end of the second piston cylinder.

8. The heliostat support according to claim 7, characterized in that: A bearing is provided between the column and the main shaft; The bearing comprises an inner ring and an outer ring which are rotatable relative to each other; the inner ring is sleeved on the main shaft, the outer ring is connected to the upper end of the column, and the column is arranged in the radial direction of the outer ring.

9. The heliostat support according to claim 7, characterized in that: It also includes a hydraulic station; the hydraulic station is connected to the first piston cylinder and the second piston cylinder pipelines respectively.

10. The heliostat support according to claim 7, characterized in that: The support assembly further includes a plurality of crossbeams arranged on the main shaft, wherein the plurality of crossbeams intersect with the main shaft to form a mounting surface for fixing the heliostat; and a distance from the main shaft to the rack is greater than a distance from an edge of the crossbeam to the main shaft.

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